The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2014
Filed:
Dec. 25, 2008
Shohgo Yamauchi, Tsukuba, JP;
Shohgo Yamauchi, Tsukuba, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A polymer light emitting element having a large light releasing surface, a high light emitting efficiency and a long life, a polymer light emitting display device and planar light source, as well as a method for manufacturing the polymer light emitting element are provided. The polymer light emitting element is characterized by comprising a first electrode, a second electrode and a light emitting layer provided between the first electrode and the second electrode and containing a polymer compound, wherein the second electrode is composed of three layers, a first layer, a second layer and a third layer arranged in this order viewed from the light emitting layer, and at least one of materials contained in the second layer has a reducing action on at least one of materials contained in the first layer, and the visible light transmittance of the third layer is 40% or more.